Understanding the Genetic Basis of Familial Combined Hyperlipidemia in Mexican Individuals

January 11, 2012 updated by: Paivi Pajukanta, University of California, Los Angeles

Genetic Susceptibility to Common Lipid Disorders in Mexico

Familial combined hyperlipidemia (FCHL) is an inherited disorder characterized by elevated levels of cholesterol and triglycerides; it often occurs in Mexican individuals with coronary heart disease (CHD). The purpose of this study is to identify the specific genes that predispose Mexican individuals to FCHL.

Study Overview

Status

Completed

Conditions

Detailed Description

CHD is the leading cause of death in Mexico. Dyslipidemia that is characterized by high total cholesterol, high triglycerides, and low "good" high-density lipoprotein (HDL) cholesterol is a risk factor for developing CHD. Research has shown that the Mexican population has an increased tendency towards dyslipidemia, but it is not known what genetic factors contribute to this predisposition. This study will examine the genetic basis of FCHL, which is an inherited form of dyslipidemia characterized by elevated levels of total cholesterol and triglycerides. FCHL is a major contributing factor in CHD; 20% of individuals with CHD under the age of 60 have FCHL. The purpose of this study is to identify and characterize the specific DNA sequence variations that predispose Mexican individuals to FCHL. Results of this study may aid in the development of appropriate prevention and screening techniques.

This study will enroll individuals in Mexico who have FCHL. Participants will attend one study visit for blood collection and DNA sampling. Family members of participants will be contacted and asked to provide a DNA sample also. A select group of participants will return for a second study visit for RNA sampling. Study researchers will analyze participants' DNA and RNA samples, as well as two FCHL genes identified in previous research studies.

Study Type

Observational

Enrollment (Actual)

998

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Mexico
      • Mexico City, Mexico, 14000
        • Instituto Nacional de Ciencias Médicas y Nutrición

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

10 years to 80 years (Child, Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

Study subjects are Mexicans visiting the Dyslipidemia Clinic at the Instituto Nacional de Ciencias Medicas y Nutricion, Salvador Zubiran, Mexico City, and their family members

Description

Inclusion Criteria:

  • Elevated levels of serum total cholesterol, triglycerides, or both
  • Elevated levels of serum apolipoprotein B (using the Mexican population percentiles)

Exclusion Criteria:

  • Tendon xanthomas
  • Kidney disease
  • Thyroid disorder

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Identifying the specific genes that predispose Mexican individuals to FCHL
Time Frame: Measured through the use of genetic samples
Measured through the use of genetic samples

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

University of California, Los Angeles

Collaborators

National Heart, Lung, and Blood Institute (NHLBI)

Investigators

  • Principal Investigator: Paivi E. Pajukanta, MD, PhD, David Geffen School of Medicine at UCLA, Department of Human Genetics

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

July 1, 2006

Primary Completion (Actual)

June 1, 2011

Study Completion (Actual)

June 1, 2011

Study Registration Dates

First Submitted

August 16, 2006

First Submitted That Met QC Criteria

August 16, 2006

First Posted (Estimate)

August 17, 2006

Study Record Updates

Last Update Posted (Estimate)

January 12, 2012

Last Update Submitted That Met QC Criteria

January 11, 2012

Last Verified

January 1, 2012

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 1348
  • R01HL082762-01A1 (U.S. NIH Grant/Contract)

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

Clinical Trials on Coronary Disease

Search Similar Trials

Sponsors and Collaborators

Medical Conditions

Drug Interventions

CROs by country

CROs in Qatar

Conditions

Rare Diseases

Drug Interventions

Dietary Supplements

Sponsor/Collaborators

Locations

3
Subscribe